Gale GS401 Re-foam Project

If anyone's appetite's been whetted by this thread, have a look here:

http://cgi.ebay.co.uk/ws/eBayISAPI.d...tchlink:top:en


http://contact.ebay.co.uk/ws/eBayISA...lerQuestion_VI

Here is my redesigned crossover. I think I'm going to get new air-cored inductors and build new crossovers complete.

http://farm8.staticflickr.com/7292/8...2c68e809_b.jpg

I thought you would Martin that rats nest would have me loosing sleep for a month, i suspect your the same? :D

As the outsides of the terminal plates look a bit rough & that your omitting the fuses. maybe you could kindly ask Mark (YNWaN) if he could make you some replacements to your design out of Acrylic!

You're right, Andr'e. I prefer the idea of starting it over and laying everything out nicely.

Greetings, Martin. You're schematic is badly wrong. so is the original:

http://i26.photobucket.com/albums/c1...ps0ee9e0d5.jpg

Those capacitors at the input to the midrange filter make a dead short at high frequency.

My best guess is the 6.8uF goes AFTER the 0.3mH coil. It would probably be very good to put a 2.2 R resistor in front of the whole midrange filter, since it dips dangerously low near 3 ohms even in the original. The Gale was known as an amp killer anyway.

The treble filter is a straight lift from the Celestion Ditton 44, as it goes. Hope that helps, I like the Gales. :)

Thanks, Steve. Now that you point it out, it does look wrong. I shall trace the real one when I remove it.

Thanks again to Steve, I've revised my crossover diagram and replaced the original in post #52 for fear of anyone seeing and making use of it. The circuits in the Gale refurbishing website are incorrect except for the GS402, which shows the capacitor in the correct position (thanks to Andr'e for sending me the link).

I don't know which would have lasted longer, the caps or the Chord. My money would be on the Chord, but I wouldn't like to try it for real :lol:

Looking at the GS402 crossover here, I'm intrigued by the resistor choices in this non-variable design. The mid has 6R4 resistors (10 in parallel with 18) giving a little more mid output than mine, and the tweeter has a fixed 1R2 giving some more treble energy.

I would expect the 402 to sound brighter as a result.

Do the US ones have the same bass units in them as the UK examples?

They seem to Dave, they look like the AR bass units and have a square magnet assembly.